This is a nice list of blogging platforms that highlights free options. Now you really have no excuse not to give blogging a try!
"Well actually it's a huge privilege to have the time to sit down and do the research and write a whole blog post and..."
Sounds like a great first blog post, would love to read your thoughts on this!
"I don't have anything interesting to share!"
How about writing about how you discovered the fediverse, what you like about it? What can be improved?
Or just list your top 5 joke posts you found on here.
Even if your blog has just one post on it, it's still something that's yours. Your contribution to our shared web.